On Jul 14, 2005, at 11:05 AM, Dario Bonazza wrote:
Don't forget the many sensor sizes of the compact digicams. Do you think that developing as many jargons and reference as the available sensor sizes would help? The problem is that industry makes as many sensor sizes as their designers are capable to think about, hence there are no longer only a few formats.
The small-sensor, fixed lens cameras are usually marked with lenses specifying their "35mm equivalent" zoom range, for instance: the Konica Minolta A2 lens is said to be 28-200mm effective focal length, rather than it's actual ~7 to ~55 mm range.
Sensor chips are sized by a very arcane measure. A comprehensive list of sensor sizing to format dimensions is available on DPReview.com. You can easily construct a spreadsheet from the format data to allow making whatever equivalence you want.
However, given that only DSLR lenses in the digital arena are referred to by their optical focal lengths, you only really need to concern yourself with the field of view range there. I don't tend to work with a dozen different sensor sizes, only one, and have barely touched a 35mm film camera in several years.
Godfrey 35 is Normal
